It deals about how to integrate the new features into your hammer made maps.
In this tutorial you will learn how to
Play Cave Johnson Lines
Add a custom light board
bring up the rate window
publish a hammer map to the workshop
I plan to do another tutorial, of advanced hammer/workshop features, so you can have more freedom with lightboard, bringing the rate window and playing lines.
The video contains spoiler for the first cave johnson line.
Hope it is useful!
Also, its my first tutorial video. So, give me a break (and tips, mostly tips)

By the way your test chamber looks interesting, I stopped watching once you went in-game because I'd like to play through it sometime.

